Heating chamber for a portable heater



FIG. 1 is a front elevational view of a heating chamber for a portable heater, showing our new design;

FIG. 2 is a sectional view thereof, taken along line 2--2 of FIG. 1;

FIG. 3 is a sectional view thereof, taken along line 3--3 of FIG. 1;

FIG. 4 is a sectional view thereof, taken along line 4--4 of FIG. 1;

FIG. 5 is a front elevational view of a second embodiment of a heating chamber for a portable heater;

FIG. 6 is a sectional view thereof, taken along line 6--6 of FIG. 5;

FIG. 7 is a partial sectional view taken along line 7--7 of FIG. 5;

FIG. 8 is a front elevational view of a third embodiment of a heating chamber for a portable heater;

FIG. 9 is a sectional view thereof, taken along line 9--9 of FIG. 8.

The broken line disclosure of a portable heater is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a heating chamber for a portable heater, as shown and described. 